Question
In an examination, D scored 10% more than C, C Scored
40% more than B, B scored 30% more than A and A scored 20% more than E. E scored 200 marks out of 500, find the marks secured by D.Solution
Marks obtained by E is 200, as given Marks obtained by A = 120% of 200 = 240 B scored 30% more than A = 130% of 240 =312 And C scored 40 % more than B = 140% of 312 = 436.8 D scored 50% more than C, so D = 110% of 436.8 = 480.48 Therefore D obtained 480.48 marks in total.
Find the mean of the following observations:
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